Valved waste outlet trap



Aug. 3, 1937. M. wAssERMAN vALvED wAsTE OUTLET TRAP Filed June 1o, 195e /A/z/f/vra/e M M M M o TM Patented Aug. 3, 1937 i,.miz'N'l y OFFICE l 2,089,141 't f 'VALVED wAsTE OUTLET TRAP l lYIorris Wasserman, Los Angeles,l Calif. -4 Applieationjuiie 4t1,01, 1936,. serial No. V84,520

1" claim. (ci. isz-16) i y y t y Fig. 3 is a cross section taken on the line 3-,3 I y :invention @relates generally to. plumbing outletI traps :and imre ...particularly fto an voutlet trpghewng :a Valve that maintains its normal closed position by gravity and the principal object of my invention is, to provide a relatively simple, practical and inexpensive valved trap particularly adapted for use in the outlet connections of bath tubs, closet bowls, sinks, stationary wash tubs and the like arid which will be effective in preventing sewage, noxious gases and the like from backing up through the outlet fitting .and passing into the building or household plumbing with resultant damage to floors, plaster and furnishings.

In the event that the waste pipe that leads from the plumbing fixtures of a building to the sewer becomes clogged, the waste water or sewage that passes into the upper portion of the waste pipe of the building from the plumbing fixtures therein, will back up through the lower traps connected to the waste pipe and overflow through the fixtures, thereby causing damage to floors, ceilings and furnishings and it is the prime object of my invention to provide the traps that connect the plumbing fixtures with the building kwaste pipe, with automatic valves that will effectively prevent water, sewage .and the like from passing backwardly through the traps, which action causes damage and consequent expense as above set forth.

A further object of my invention is, to provide a valved outlet trap that conforms with the accepted standards of plumbing practice and installation and which may be very easily and quickly installed. t

A further object of my invention is, to provide simple and eflicient means for eifectively preventing foul air and noxious gases from being siphoned from the sewer outlet back through the trap.

With the foregoing and other objects in view my invention consists in certain novel features of construction and .arrangements of parts that will be hereinafter more fully described and claimed and illustrated in the accompanying drawing in which:

Fig. 1 is an elevational view of a. portion of a waste pipe, the lower end of which is connected in the conventional manner to a sewer or other outlet and showing valved traps of my improved construction connected to said waste pipe.

Fig. 2 is a vertical section taken through the center of a valved trap as contemplated by my invention.

,Referringxby 5`mirneralsutoV the accompanying drawing which illustrates a preferred embodiment of my invention, I0 designates a Waste pipe of the type generally employed in buildings and the lower end of said waste pipe is connected in the conventional manner to a sewer or other outlet.

At various points throughout the height of the waste pipe I0, outlet traps from the plumbing iixtures in the building are connected to said waste pipe and in accordance with my invention, the trap includes a substantially U-shaped tubular member II which functions as a water seal trap,` has one end connected to the waste pipe that leads from the outlet of a closet bowl, bath tub, sink, stationary wash tub or the like.

Suitably connected to the other leg of the trap II, is the lower end of the vertical leg of an elbow-shaped tubular tting I2, and the end of the horizontal leg of this tting is suitably connected to the waste pipe I0.

Formed within the horizontal leg of tting I2, adjacent the point where the same joins the vertical leg, is an annular rib or flange I3 that provides a vertically disposed valve seat.

I-Iingedly mounted in the upper portion of the horizontal leg of tting I2, directly in front of and above the valve seat' I3, is the upper end of a substantially L-shaped arm I4, the horizontal leg of which projects toward the valve seat I3.

The seat I3 is concentrically arranged within the horizontal portion of the fitting I2 and the horizontal member of arm I4 occupies a position in the center of the annular valve seat.

Loosely mounted on the horizontal member of arm I4 and retained thereon by a head or stud I5 that is formed on the end of the horizontal member of the arm, is a disc valve I6 of any suitable material, preferably soft metal, and which normally resists on valve seat I3 and thereby cutting olf the back flow of sewage water, foul air or noxious gases from waste pipe I0 into and through trap II.

Ihe mounting of the arm I4 in the fitting I2 is such that the valve I6 carried by said arm normally rests by gravity against the seat I3, thereby closing the passageway through said fitting I2, but the pressure of any water or sewage from the fixture to which the trap is connected, will exert suiicient pressure against the valve I6 to swing the same outwardly and upwardly away from seat I3 so that said waste water or sewage may discharge into the waste pipe I0.

In the event that the lower portion of the waste pipe or its outlet to the sewer becomes clogged, the accumulation of sewage arising in the waste pipe cannot pass outwardly through the Valved traps connected thereto due to the presence of the valves Within said traps and any pressures developed by the sewage seeking an outlet through the valve trap will act upon the valve to force and hold the same against its seat I3. y

Inasmuch as the valve normally maintains its closed position by gravity, it will be impossible for any foul air or noxious gases to be siphoned back through the trap and its fitting and thus the passage of foul air and gases into the rooms of the equipped building is eiectively prevented.

Thus it will be seen that I have'provided a valved fitting for the outlet traps of plumbing systems, which tting is relatively simple incon-z struction, inexpensive of manufactureand veryV and said tting may be very easily and quickly applied to an outlet trap and waste pipe.

It will be understood that minor changes in the size, form, and construction of the various parts of my improved valved W-aste outlet trap may be made and substituted for those herein shown and described without departing from the spirit of the invention, the scope of which is set forth in the appended claim.

I claim as my invention:

l'Ihe combination with atrap, ;of an elbowshaped tubular member having the lower end of its vertical leg detachably connected to one of the legs of said trap, an annular valve seat formed within the horizontal portion of said L-shaped pmembeig Avan inverted L-shaped arm pivotally mounted in the upper portion of said L-shaped vmember in front of said valve seat, a headed pin y; projecting from the lower end of said inverted 

